Windshield attachment



Y E. MU NTWYLER WI NDSHIELD ATTACHMENT E15/L Filed Feb. 21, 1927 `Patented Oct. 23, 1928.

UNITED. lsrxrlas PATENT-oEF1CI.-:. f

` ERNST MUNTWYLER, .OF LUZERN, SWIll'lZEELAND.`

VTINDSHIELD Applicationrled February 21, 1927, Serial No.

The present invention `relates to a trans parent observation device for attachment to the ivindshiclds of' automobile vehicles, which device is Inade of glass, Celluloid or the like material and is so constructed that it will remain transparent even in Wet or 'frosty Weather.

Theinain object of the invention is to provide an observation device which may be applied to any ordinary type of Windshield glass so as to lie in the normal'tield of vision of the driver and which presents an outer convex surface from Which moisture will quickly drain, so that the driver may at all times see clearly therethrough.

shield and observation device.

Fig. t is a front elevation of the part-s shoivn in Fig. l. Y

V Figs. 5 and 6 show a modilied form of construction ol the invention in section and front elevation respectively, the observation device in thiscaseloeing in the form of a cylinder.

Figs. 7 and 8 aresectional views corresponding to Fig. 3 ot two further moditied forms ot construction.

A Windshield 2 of conventional type is [itted on to a motor vehicle l and isprovided with an observation device 3 embodying my invention as shown in Figs. land 2- of the drawings. lThis device 3 is made of'glass,

Celluloid Yor other transparent material.

According to Figs. l, 2. 3, 4t, 7 andS the device 3 is calotte-shaped or deine-shaped or ot hemispherical form, the base of which is enlai-ged by an annular flange 4; adapted `to be secured at 5 to the Hat glass Windshield 2.

In Figs. 3, 4, 7 and 8 the hood 3 is simply secured to the outer :tace ol the Windshield glass, Which is lett in normal condition. The Windshield glass may, however, as shownin Figs. 7 and 8, be cut away to torni an opening corresponding to the size of the base of the ATTACHMET.

169,752, ,and `in.Switzerland*February 25, ,1926.y l

hood so as to allow clearer vision to be4 oby tained.

The constructions according to Figures 7 and 8 provide for a convenient heating of the device 3. In Fig. 8 an electric heater 6 is eniployed which is attached t0 the Windshield 2 orto the device 3, Within the latter. `Conductors 7 arel provided Which lead to terminals 8 of the heater 6, such terminals being situatedon the drivers side of they Windshield 2. Then the heater 6 is in use, air Within the space on the concaved side of the device 3 is i heated so that no snow or frost can accumulate on the exposed surface of the device 3, which therefore remains transparent. As an alternative method of heating the rdevice 3 the interior of the latter may be heated by conducting Warm air thereto as shown in Fig.

. 7. For this purpose a warm air conducting tube or vpipe l5 is provided, the discharge end lof which leads into the device 3 and keeps the saine Warm. This tube or pipe l5 may be supplied With air suitably heated by the engine exhaust.

According to the construction shown in Fig. 8 the shield is cut away in line With the device and the electric heater is itted Within "i the base of the chambered portion of the device 3. This position of the heater has the advantage of distributing the heat more evenly, as heated air rises upwards.

In the lapparatus indicated in Figs. 5 and 6 the device 3 takes the shape of a closed cylinder Which is fitted to revolve in an opening in the Windshield and is mounted for rotation about journalsQ in fixed bearings on the surface of the Windshield; By this construe* tion the result of continued transparency is the same as with the other constructions as t-he interior of this cylinder may also be heated. The cylinder is adapted for rotation by the actuationof a handle 12 andvvcan rotate through an angle of 180o so that that portion of the cylinder projecting beyond the front of the Windshield may be cleaned by means of a brush which is itted beneath the cylinder .onto a bracket 13 connected to the Windshield.

Having now particularly described and ascertained the nature of my said invention andln what manner the same `1s to be performed, I declare that what I claim is :e

k1. The combination With the transparent Windshield -pane of an automobile or like autornotive vehicle, of an observation device sef cured upon the outer face of said pane in the ""normal eld yof-vision ofthe driver, said y5 arranged onrthe concaved side of said body for interiorly heating said body. 2. The combination of a transparent Windshield pane havngan openingtherein lin the normal eldolf vision of the.v driver, of an ob- 10 seivrtion device securedupon the outer face of 'Said pane `inline with said opening, vsaid device comprising a hollowy body of trans- -pa-1'e11t materialV presenting n outer conveXly curved kmoisture shedding face, and Ymeans arranged on the conoaved side of said body 'for interiorly heating said body.

In testimony, whereof he aIiXes his Signature. v

`ERNST'ivrUivrWXLEn. 

